Paper shredding and crimping machine



July 12, 1932. I H w, w so 1,866,690

PAPER SHREDDING AND CRIMPING MACHINE Filed May 18, 1951 2 Sheets-Sheet 1 /BY 9% OR? fiw ir July 12, 1932. H, w WILSON 1,866,690

PAPER SHREDDING AND CRIMPING MACHINE Filed May 18, 1931 2 sheets-sheet 2 INVE TOR W zwdm ATTORNEY mama m 12, 1932 UNITED srATss ATENT *orricn may w. wILsoN, or. can mircrsco, canmonm rarna smamnmesnn cnmms Enema Application filed May 18,

This invention relates to improvements M paper shredding machines of the kind adapted to manufacture paper excelsior from newspapers or the like. Q V

An object of my invention isto provide an' improved paper shredding or cutting machine embodying means for tearing sheets of paper into a plurality of narrow strips and also means for crimping the said strips;

Another object of-my invention is to ro-' vide an improved paper shredding machine embodying novel paper feeding mechanism' which operates automatically to cause onl such amounts of paper to befed to the cutting or shreddin .mechanism of the machine as can he satis actorily accommodated therehvc A still further ohjectof my invention-is to provide an improved paper cutting or shreddingmachine emhodying novel means for.

. manufacturing crimpedfpaper excelsior from waste papersuch as newspapers.

Other objects more or less apparent will present themselves or will he specifically pointed out-in the description to follow.

Inthe accompanying drawings:

structed in accordance with my invention;

Fi g. 2 is a sectional view of the cutting discs, showing their showin'gparts thereof in section.

Referring to the drawings,.thenumerals 1 and 2 represent the spaced sides of a suitable I supporting frame having a motor 3 mounted thereon. i Thesides of the frame are substan- 45- abiy otatably mounted within the blocks 6 and 7, respectively, are the ends of shafts 8 and 9, and each of said shafts have, respectively,

a'series of 10.and11 secured thereon.

. 50. The discs are of circular shape and are pro-.

1 Fig. 1 is a top plan view of a machine con- I positions with respectto 'each othem-andf Fig. 3-is a sideelevation of the machine,

1931. Serial No. 533,167.

vided .with sharp cutting edges at their peripheries. The discs of each series rotate with v the. shaft on which they are mounted, and by means, such as nuts 12, they are held in firm contact with one another. The discs 11am so arranged with respect to the discs 10., that the cuttingedges of the former are positionedhetween the cutting edges of the latter, with .a slight clearance between. In order to ada just the clearance, so'that difi'erent thicknesses of paper may he properly'accommodated h the discs, a screw 13 having right and le hand'threads is rotatably mounted'hetween each pair of blocks 6 and 7, with the ends of the same extending into the said blocks. By turning the screws. 13- in one direction the blocks 6 and 7 may be, separated so asto separate the cutting edges of the two sets of discs,

and when turned in the opposite direction the I two sets of discs maybe moved so their out tingedges are brought toward each other.

So as to adjust the positions of the two sets of discs on the progecting parts 4:; and 5 of the frame and without changing their lfiliite t'ive positions, a screw-M is rotatably atyond a bar 15 secured to the ends of the said projecting parts 4: and 5.. A nut 16 on each of the screws M, serves as means for permitting the movement ofthe blocks 7 and 8, as a unit, either toward or away from the bar 15, thereby affording means for. adjusting the posi tions of the-discslO and 11. i

at tached at one end to each of the hloclrsi', with its opposite end extending through and heihe motor shaft is provided with apulley 17 over which extends an endless belt 18, the

said helt also extending over a large pulley i9 securely mounted on the shaft 8. The

shaft 8 carries a" gear 20 which meshes with a gear 21 carried hyithe shaft 9, and thus.

upon the rotation of the'motorshaft, the two sets of discs 10 and 11 maybe rotated in opposite directions. 5

Rotat'alilymounted on the frame and within suitable provided thereon, are

shafts 22 and 23 which lc'arry, respectively rollers 22 and 23'. An endless conveyor belt 24 extending over the rollers- 22 and 23, is of sufiicient width to accommodate sheets of paper to be cut or torn The rollei'22'- extends over and above the be carried towar rear parts of the discs 10, thereby causing the sheets of paper delivered by thebelt 24 to. fall upon the said discs. -An-end of the shaft 8 is provided with a gear 25 which meshes with an idler gear 26 mounted on the side 1 of the frame. The idler gear 26 is in mesh with a gear 27 secured to an end of the shaft 22. Upon the shaft 8 being rotated as previously described, the roller 22' is rotated in a clockwise-direction, thereby causing the endless conveyor-belt 24 to be actuated ina di-' of the waste paper sheetsas are deposited thereonto ward the cutting or tearing discs 1 10 and 11. Suitably'mounted on the frame is an upright plate 31 which extends above the belt 30 and is provided withv a-lower ed 'e that isspaced from the upper surface of t e said'beltfor a certain distance. The space located between the lower edge of the plate 31 and the conveyor belt 30 is of suitable size to'permit a; quantity of waste paper sheets of certain thickness to be carried forwardly and pass beneath the said plate. The space or dinarily present between the cutting edges of the two sets of discs 10 and 11 enables acertain number of sheets of certain thickness tof bc properly accommodated and cut. The

purpose of having the plate 31 above the belt 30 is to enable only a certain number of sheets of paper to be carried toward the cutting discs,

forward roller'29'is provided with a pulley 29, while the shaft 23 is provided with a pully 23a of approximately the samesize.

An endless belt or chain 32"ex tends rover,

pulle s29 and 23a thereby enabling thebelt 30 t0 shaft 23'.

q Rotatably mounted on the frame at points adjacent the roller 29, is a roller 33 havin its ax s located in suitable bearings provi'd on "said frame. Also located on the frame at points adjacent the roller 23 is a roller 34 which has its axis also rotata ly mounted in suitable bearings provided on he said frame,- An endless. belt conveyor 35 exte 'ds over roll-.

.ers 33 and 34 and serves to receive quantities of paper, sheets from the conveyor belt 30 and carry them to the conveyor belt 24. The

shaft 23 is provided with a large gear 23b which meshes with an idler gear36 mounted .on the frame, the said idler gear being in Ymesh with a small gear 37 secured to the axis of roller34. Thus when the belt 24 is actuated at a speed the belt 35 is also actuthe number being slightly greater than the capacity of the machine.

Theaxis of the.

actuated from power exerted'through with the gear ated in the same direction at a'considerably' greater speed.

Located directly above the roller 34 is a spring pressed roller- 38, the axis of which is rotatably mounted in blocks movably located in upwardly extending supporting members 39 secured tothe sides 1 and 2 of the frame. Suitable springs interposed between the tops of the. supporting members 39 and the blocks within which the axis of the roller 38 is mounted, serve to press the said roller downwardly so it normally and yieldably presses 'against the conveyor belt 35.

v Rotatably mounted on suitable brackets 40 which are secured to the sides 1 and 2 of the frame, are the axes of a plurality of rollers 41, the said rollers being spaced above the uppersurface of the conveyor belt 35 and separated from each other by an intervening space. The space located between the rollers 41 are connected by a series of pulleys 42 and to permit the passage of paper sheets of a thickness corresponding to the capacity of the machine. The axesof the rollers 34 and 41 are connected by a series of pulleys 42 and belts 43,- thereby enabling the said rollers 41 to be rotated through the power delivered to the gear 37 of roller 34. The rollers 41 are rotated in a clockwise direction while the conveyor belts are being rotated in the same direction. If there is too much paper delivered'to the conveyor belt 35 by the first Iconveyor belt 30, the rollers 41 hold back the excess quantity thereby enabling the conveyor belt 35 to only deliver a suflicient thickness of paper sheets to conveyor belt'24 as can be properly accommodated by the space between the cutting edges of discs 10'and 11.

In order to cause the strips of paper passing from the cutting-discs 10 and 11 to be cr1mped,-I have rotatably mounted a pair of longitudinally corrugated drums 44 and 45 whereby they intercept the said strips of paper falling from -the said discs. The axes of' the drums are rotatably mounted in the -on the forward part of the frame in positions i sides 1 and'2 of the frame, with the corrugations of one drum meshing with the dormtions'offthe other. The axis of drum 44 is provided with agear 46 which meshes with an idler gear 47 sup orted at the sidel of the frame, the

25 secured to shaft 8. Thus when the shaft 8 is rotated by the motor 3,

'the drums 44 and 45 are rotated in opposite directions. The strips of paper passing from the cutting discs 10 and 11 fall onto the corrugations of drum 44 and are carried ferwardly between the two drums, after-which they are crimped and fall downwardly. The drum 45 is rotated by the drum 44, the corrugations being in mesh and acting inthesame manner as 'intermeshing gears.

said i ler gear being in mesh.

A number of sheets of waste paper is ordinarily placed by the operator on the conveyor belt 30 whiclicarries a certain portion thereof-to the conveyor belt 35. 'The conveyor belt finally delivers a certain amount of the paper to conveyor belt 24, which in turn carries the paper-to the set of discs 10, after which it passes between the cutting edges of discs 10 and 11 and is.cut or torn into a plurality of strips. The strips fall onto the corrugations of drum 44 and thereafter are carried between the two drums 44 and 45, finally emerging therefrom with transversely disposed crimps located therein. The crimping of the strips, enables air to enter between the contact strips, thereby causing the individual strips to separate one from the other as they fall from the drums.

the said conveyors being am Eed ment and synchronized with}: e mechanism, and means synchronized with the conveyors and mounted adjacent one of the belt conveyors for rejecting sheets of said paper over and above a certain thickness whereby 'a stack of said sheets of pa r of a certain thickness, may be delivere to the shredding mechanism at a given time.

In testimony whereof I have aflixed my signature. HARRY W. WILSON.

Having described my invention what I claim is 1. In a machine of-the class described, a pair of oppositely rotated parallel shafts mounted on the frame, each shaft mounting a plurality of inter-meshing bevel-edged discs,

a pair of oppositely rotated intermeshing parallel corrugated drums mounted on the frame and positionedto intercept material passing between the pairs of discs, and means 7 for rotating the shafts and drums.

the strips.

2. In a machine of the class described,- means for tearing sheets of material into a plurality of strips, and means synchronized with the first mentioned 3. In a machine of the class described, a

pair of sets of oppositely rotated bevel-edged mtermeshing discs, conveying means synchronized with the discs for conveying ma, terial thereto, crimping means synchronized with the discs for crimping the material after into a plurality of strips.

it leaves the discs,-and means for actuating the discs, conveying means and the crimping means. I v

4. In a'machine of the class described, a

frame, a plurality of separated conveying belts movably mounted in alignment on the frame, and means mounted on the frame for allowingonly a certain quantity of material to pass from one belt conveyor to another,

and means located adjacent one of .thebelt conveyors for cutting or tearing the material means for crimping 5. In amachine ofthe class a paper shredding mechanism, a plurality of by the shredding mechanism. 7 6. In a machine ofthe class described, a

paper shredding mechanism, a plurality of endless belt conveyors for deliveringl amsm,

of paper sheets to the shreddingmec sheets 

